import React, { Component } from 'react';
import './App.css'

class App extends Component {
    render() {
        return (
            <div>
                <div onClick={this.handleClickA} className='a'>
                    大盒子
                    <div onClick={this.handleClickB} className='b'>小盒子</div>
                </div>
            </div>
        );
    }
}

export default App;
